I've been trying adaptive vsync on the new Nvidia 301.24 beta driver. I've noticed brief instances when GPU usage dips from around 85% to as low as 30% on each video card in my SLI setup. The slowdowns usually happen when I make quick turns with the mouse or when running. I've seen this happen in all of the games I've tested so far. Frame rates suffer a noticeable drop. I know 301.24 is a beta driver -- and designed for 600 and 500 series GPUs, at that -- so a few bugs are to be expected, especially on older cards. But before I rollback to the previous drivers, I was wondering whether maybe the problem is just due to some setting in the control panel which I've neglected to set. I'm running two GTX 470s on a single 22" Samsung monitor at 75Hz refresh rate. I have in-game vsync off, adaptive vsync on in the CP, with power management at maximum performance. Have any of you guys been using adaptive vsync on these drivers? If so, what settings are you using? Thanks.